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Solnce55 [7]
3 years ago
8

A farmer plant 1/8 of his land with beans 1/4 with corn 3/10 with wheat and left the rest unplanted what percentage of his land

did the farmer leave unplanted
Mathematics
1 answer:
ycow [4]3 years ago
4 0

Answer:

\frac{13}{40}=0.325=32.5\%

Step-by-step explanation:

\frac{1}{1}-\frac{1}{8}-\frac{1}{4}-\frac{3}{10}=\\\\\frac{40}{40}-\frac{5}{40}-\frac{10}{40}-\frac{12}{40}=\\\\\frac{13}{40}=0.325=32.5\%

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Help please !!<br> The graph of the invertible function f is shown on the grid below.
vivado [14]

Answer:

4

Step-by-step explanation:

→ We go up the y axis to 6 and read of the x coordinate which is 4. This is because an inverse function does the the opposite i.e.  if f ( x ) = y

f⁻¹ ( y ) = x.

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=prove%20that%5C%20%20%5Ctextless%20%5C%20br%20%2F%5C%20%20%5Ctextgreater%20%5C%20%5Cfrac%20%7B
inysia [295]

\large \bigstar \frak{ } \large\underline{\sf{Solution-}}

Consider, LHS

\begin{gathered}\rm \: \dfrac { \tan \theta + \sec \theta - 1 } { \tan \theta - \sec \theta + 1 } \\ \end{gathered}

We know,

\begin{gathered}\boxed{\sf{  \:\rm \: {sec}^{2}x - {tan}^{2}x = 1 \: \: }} \\ \end{gathered}  \\  \\  \text{So, using this identity, we get} \\  \\ \begin{gathered}\rm \: = \:\dfrac { \tan \theta + \sec \theta - ( {sec}^{2}\theta - {tan}^{2}\theta )} { \tan \theta - \sec \theta + 1 } \\ \end{gathered}

We know,

\begin{gathered}\boxed{\sf{  \:\rm \: {x}^{2} - {y}^{2} = (x + y)(x - y) \: \: }} \\ \end{gathered}  \\

So, using this identity, we get

\begin{gathered}\rm \: = \:\dfrac { \tan \theta + \sec \theta - (sec\theta + tan\theta )(sec\theta - tan\theta )} { \tan \theta - \sec \theta + 1 } \\ \end{gathered}

can be rewritten as

\begin{gathered}\rm\:=\:\dfrac {(\sec \theta + tan\theta ) - (sec\theta + tan\theta )(sec\theta -tan\theta )} { \tan \theta - \sec \theta + 1 } \\ \end{gathered} \\  \\  \\\begin{gathered}\rm \: = \:\dfrac {(\sec \theta + tan\theta ) \: \cancel{(1 - sec\theta + tan\theta )}} { \cancel{ \tan \theta - \sec \theta + 1} } \\ \end{gathered} \\  \\  \\\begin{gathered}\rm \: = \:sec\theta + tan\theta \\\end{gathered} \\  \\  \\\begin{gathered}\rm \: = \:\dfrac{1}{cos\theta } + \dfrac{sin\theta }{cos\theta } \\ \end{gathered} \\  \\  \\\begin{gathered}\rm \: = \:\dfrac{1 + sin\theta }{cos\theta } \\ \end{gathered}

<h2>Hence,</h2>

\begin{gathered} \\ \rm\implies \:\boxed{\sf{  \:\rm \: \dfrac { \tan \theta + \sec \theta - 1 } { \tan \theta - \sec \theta + 1 } = \:\dfrac{1 + sin\theta }{cos\theta } \: \: }} \\ \\ \end{gathered}

\rule{190pt}{2pt}

5 0
2 years ago
What are the solutions to the quadratic equation x^2-15x+36=0
ZanzabumX [31]
X² - 15 x + 36 = 0
x² - 12x - 3x + 36 = 0
x( x - 12) - 3( x - 12) = 0
(x - 3)( x - 12) = 0

x - 3 = 0
x = 3
or
x - 12 = 0
x = 12

The solutions are 3 and 12
7 0
3 years ago
PLS HELP NEED THIS ANSWERED ASAP
ollegr [7]

Answer:

Solution is 3,0.

One slope is -0.66

Step-by-step explanation:

The two lines cross each other on the x-axis at 3 units.

Looking at the line going up and to the left from the intersection point (3,0), it crosses the y-axis at (0,2).  Therefore, the slope is 2/-3.

7 0
3 years ago
3 + 6 x (5 + 4) ÷ 3 -7?
ch4aika [34]

Answer:

Answer: 14

Step-by-step explanation:

{ \rm{3 + 6 \times (5 + 4) \div 3 - 7}} \\  \\  = { \rm{3 + (6 \times 9) \div 3 - 7}} \\  \\  = { \rm{3 + (54 \div 3) - 7}} \\  \\  = { \rm{14 }}

3 0
2 years ago
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